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Australian embryologists have found evidence that suggests

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Re: SC: Australian embryologists [#permalink]

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New post 27 Aug 2011, 04:14
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A
B
C
D
E

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70% (01:50) correct 30% (00:54) wrong based on 98 sessions

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why cant we use has/have (been) descended instead of is descended ??????
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Re: SC: Australian embryologists [#permalink]

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New post 27 Aug 2011, 04:26
since the subject is singular, we cant use "have' here..
if we use " has descended", then the sentence would be idealistic and its correct..
but since u have to choose the best among the answer choices, u chose E
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Re: Australian embryologists have found evidence that suggests [#permalink]

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New post 12 Sep 2013, 07:17
ronybtl wrote:
Australian embryologists have found evidence that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolved as a kind of snorkel.

(A) that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolved
(B) that has suggested the elephant descended from an aquatic animal, its trunk originally evolving
(C) suggesting that the elephant had descended from an aquatic animal with its trunk originally evolving
(D) to suggest that the elephant had descended from an aquatic animal and its trunk originally evolving
(E) to suggest that the elephant is descended from an aquatic animal and that its trunk originally evolved


Evolving is incorrect rather it should be evolved...

From option D and E, the later is parallel introducing 2 clauses with "that".
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Re: Australian embryologists have found evidence that suggests [#permalink]

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New post 13 Sep 2013, 00:25
ronybtl wrote:
Australian embryologists have found evidence that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolved as a kind of snorkel.

(A) that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolved
(B) that has suggested the elephant descended from an aquatic animal, its trunk originally evolving
(C) suggesting that the elephant had descended from an aquatic animal with its trunk originally evolving
(D) to suggest that the elephant had descended from an aquatic animal and its trunk originally evolving
(E) to suggest that the elephant is descended from an aquatic animal and that its trunk originally evolved


I was stuck between (C) and (E) and pulled the trigger on E because I guessed that "...and that its trunk..." played some rule somewhere that made it obvious "it" referred to the elephant and not the "aquatic animal." That's really what I used to weed out some of the possible answers, whether "it" was clear. All a guess though.
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Re: Australian embryologists have found evidence that suggests [#permalink]

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New post 04 Sep 2014, 04:23
Hi,
Please can one of the moderators give a detailed explanation ?
the explanation in OG isnt clear.

Any help is appreciated.
Thanks in Advance
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Re: Australian embryologists have found evidence that suggests [#permalink]

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New post 02 Apr 2017, 12:47
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Australian embryologists have found evidence that suggests [#permalink]

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New post 08 Apr 2017, 18:01
Quote:
Australian embryologists have found evidence that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolved as a kind of snorkel.


(A) that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolved
The sentence is trying to tell us that the evidence suggests two things: 1) that the elephant is descended from an aquatic animal and 2) that the elephant's trunk originally evolved as a kind of snorkel; in order to avoid a parallelism issue, we would have to change, "..., and its trunk originally evolved as a kind of snorkel" to "and that its trunk evolved as a kind of snorkel." Furthermore, this sentence has a string of relative clauses ("evidence that suggests that the elephant...", and the GMAT considers it "awkward and confusing to string together relative clauses." For these two reasons, choice A can be eliminated.

(B) that has suggested the elephant descended from an aquatic animal, its trunk originally evolving
The simple present tense ("suggests") should be used instead of the present perfect tense ("has suggested") because we are describing a present action (what is the evidence currently doing?) and not referring to what the evidence was doing in the past. Present perfect is typically used to describe how long an action has been going on, for example, "For the past 100 years, most evidence has suggested (present perfect) that the elephant is descended from a land animal; however, new evidence suggests (simple present) that the elephant is descended from an aquatic animal." Furthermore, a past tense should be used instead of "evolving" because we are talking about a past action (how the trunk evolved in the past, not how it is evolving now), so choice B can be eliminated.

(C) suggesting that the elephant had descended from an aquatic animal with its trunk originally evolving
This choice can easily be eliminated because the past perfect ("had descended") is not the appropriate tense (we do not have two past actions occurring at different times). Also, a past tense should be used instead of "evolving" (see choice B notes).

(D) to suggest that the elephant had descended from an aquatic animal and its trunk originally evolving
Again, the past perfect ("had descended") is not the appropriate tense. Also, this choice contains a parallelism issue ("its trunk originally evolving..." is not parallel to "that the elephant had descended.."), and a past tense should be used instead of "evolving" (see choice B notes).

(E) to suggest that the elephant is descended from an aquatic animal and that its trunk originally evolved
Here the infinitive "to suggest" is properly used as an adjective to modify "evidence". This choice also avoids parallelism issues ("suggest that the elephant is descended... and that its trunk originally evolved..."). The predicate adjective "descended" follows the linking verb "is" and properly modifies "the elephant". This might not sound right because we are used to hearing "descend" used as a verb (ie "I descended a flight a stairs."), but you shouldn't trust your ear when analyzing SC problems! Choice E is correct.
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Re: Australian embryologists have found evidence that suggests [#permalink]

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New post 10 Apr 2017, 03:20
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Australian embryologists have found evidence that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolved as a kind of snorkel.

(A) that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolved
(B) that has suggested the elephant descended from an aquatic animal, its trunk originally evolving
(C) suggesting that the elephant had descended from an aquatic animal with its trunk originally evolving
(D) to suggest that the elephant had descended from an aquatic animal and its trunk originally evolving
(E) to suggest that the elephant is descended from an aquatic animal and that its trunk originally evolved

One useful thing to remember in this context is the difference in meaning between is descended and has descended. Is descended is a linking or extant verb that denotes a state of being. There is no action involved in it. On the other hand, 'has descended' means going down effortfully as in descending from the top floor to the ground floor. There is an action involved in it. 'Is descended' is mostly used in genealogy and genetics, in which we refer to some traits that are derived from their ancestors. This knowledge will help us to get rid of B, C, and D. Now between A and E, it will not be difficult to dislodge A for using missing the 'that' //ism. It is E.
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Re: Australian embryologists have found evidence that suggests   [#permalink] 10 Apr 2017, 03:20
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